Introduction to Yubi Pavilion: This is the postscript written by Emperor Qianlong of the Qing Dynasty for Mi Fu's "Senior Tie" (also known as "Ti Xing Dian Yuan Tie"). There are eight words in total: "The fast horse cuts the formation, bends and follows the people. ". It is said that the word "rice" is like a fast horse running through the battlefield, advancing and retreating in twists and turns with ease, which is used to flaunt Mi Fu's profound attainments in calligraphy that are unparalleled and free from the world.